<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>常见鼠标事件</title>
</head>
<body>
  我是一段不愿意分享的文字
  <script>
    // 1. contextmenu 我们可以禁用右键菜单
    document.addEventListener('contextmenu', function(e) {
      e.preventDefault();
    })
    // 2. 禁止选中文字 selectstart
    document.addEventListener('selectstart', function(e) {
      e.preventDefault();
    })
  </script>
</body>
</html>